I know That's basically why I set the boundary. Because I know he won't be able to keep his promise and I need to at least have something in place so that I don't get sucked back in this cycle.
Oh I always put so much weight on if my X could keep his promise or not....turned out the only thing that really mattered for my life and for y health, was if I could keep mine! I broke just as many promises to me as he did...
Keep up the good work - support, your own health, and focusing on you will get you there!